Ancient Aliens

In this extraordinary two-hour special, Shatner will bring thought-provoking questions to the leading experts of the show. They will explore everything from human origins to groundbreaking archaeological finds and new understandings of the cosmos.

In 2017, it was revealed that the US Government spent millions investigating reports of UFOs. Could the truth about an extraterrestrial presence on Earth be part of a UFO conspiracy?

It is humankind's most profound achievement: blasting off into the stars. But is it possible that our voyages into the cosmos are really a return to our true origins? And if so, will we encounter space travellers from other worlds?

Researchers claim there are hidden messages that can be found within the works of Leonardo da Vinci - and other art throughout history - that may reveal an extraterrestrial influence.

In the 20th century, pioneering scientists, journalists and investigators defied convention and began documenting UFOs. Now, with new UFO accounts coming to light, will their work finally culminate in undeniable proof of extraterrestrial visitation?

In 2017, an object entered our solar system in such an unusual trajectory that it caused astronomers to suggest that it could be extraterrestrial. Which brings up an important question - will we have a plan for what to do if we encounter alien life?

Archaeologists have discovered that many ancient sites were built to resonate at a frequency that has a profound effect on the human brain. Could ancient people have been aware of a harmonic code that put them in contact with alien beings?

Could black holes exist not just in outer space, but here on Earth? And if so, could Earth's black holes have caused strange disappearances and other inexplicable phenomena for centuries?

The South American nation of Peru is famous for its megalithic ruins, colossal geoglyphs and the Incan civilisation. It's one of the most mysterious places on Earth - but could it also be a site of extraterrestrial visitation?

Could giant ancient drawings found etched into the desert floor be part of an ancient alien code?

Mount Shasta in northern California is known as a hotbed of strange events, from Bigfoot sightings to UFO encounters to hikers vanishing without a trace. Could the mountain's geology and placement on Earth be attracting beings from other worlds?

Could Area 51's notoriety act as a cover up to much bigger, top-secret extraterrestrial experiments taking place at multiple locations?

Island of the Giants: Oak Island treasure hunter Marty Lagina and Ancient Astronaut theorist Giorgio A. Tsoukalos explore the ancient ruins of Sardinia, Italy. (S11, ep 7)

Scientists now know that seven human-like species lived alongside Homo sapiens for thousands of years. But why is it that only humans survived? Is it possible that we were the product of extraterrestrial experimentation?

Ancient Astronaut theorist Giorgio A. Tsoukalos explores the latest scientific discoveries at some of the world's most ancient places to find evidence that extraterrestrials visited Egypt in the distant past.

The Taken: Millions of people around the world have claimed to be abducted by extraterrestrials. Are these extraordinary accounts some form of mass psychological delusion? (S11, ep 8)

Could the ancient ruins of Sardinia hold clues to an extraterrestrial past? Marty Lagina and Giorgio A. Tsoukalos explore bizarre statues, mysterious pyramids and gigantic structures left by one of the most mysterious cultures in the ancient world.

Strange places where amazing things happen. Discover the top ten most mysterious sites on the planet.

Ancient Aliens is counting down the world's top ten alien cover-ups, from the famous Roswell Incident to a secret military base rumoured to be housing extraterrestrial technology.

Seven stone giants stand guard over a Pacific island. But what are they protecting – and from whom? Ancient Astronaut theorists Giorgio A Tsoukalos and David H Childress explore a Polynesian land of bizarre figures and forbidden places.

Ancient Aliens is counting down the world's top ten extraterrestrial encounters.

They Came from the Sky: Ancient Astronaut theorists explore the idea that meteorites could be pieces of extraterrestrial technology. (S11, ep 11)

Mysterious objects with incredible powers. Discover the top ten artifacts on the planet.

A secret alliance hidden in plain sight. Joint space missions with undisclosed agendas. Have the United States and Russia been working together from the very beginning of the Space Race - in preparation for the ultimate extraterrestrial encounter?